Heat-retaining unit fob furnaces



Oct. 9, 1951 R. J. HINSLEY HEATRETAINING UNIT FOR FURNACES Filed Jan. l5, 1949 INVENTOR. H2552 d //NSL 5f Patented Oct. 9, 1951 ATENT' oFFlcE 2,570,948 HEAT-RETAINING UNIT FOR FURNCES Robert J. Hinsley, Denver, Colo. Application January 15, 1949, Serial No. 71,169

1 Claim.

This invention relates to a heat-retaining device for furnaces and heating plants. InA the usual household heating plant employing gas or oil for fuel, the heat delivered is veryuneven, due to the fact that the plant cools off rapidly when the burner is shut off by the thermostat, and heats up rapidly when the burner is again ignited.

The principal object of this invention is to provide a heat retainer which will absorb heat when the burner is ignited, to retard the rapid rise in temperature, and which will deliver heat after the burner has been extinguished for a period sufficient to prevent rapid cooling of the plant; in other words, to provide a device which will level oil the heat delivery of a plant and reduce the extreme hot and cold peaks in thedelivery.

Another object is to provide a device which will absorb' heat from the gases on their way to the smoke stack to reduce stack losses and to radiate this absorbed heat to useful heatingsurfaces.

Another object of the invention is to so construct the device that it can b-e installed in present heating plants, regardless of the type or kind of plant, without requiring any rebuilding of the plant, and which can be adjusted in place to suit the given plant and to obtain the most efficient operating use.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and eiciency. These will become more apparent from the following description.

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like nu-4 merals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. lv is a diagrammatic, sectional view of a typical household hot air heating plant, illustrating the invention in place therein;

Fig. 2 is a side View of the improved heat retainer;

Fig. '3 is ar cross-section therethrough, taken on the line 3 3, Fig. 4; and

Figs. 4 and 5 are horizontal sections, looking upwardly on the lines 4-4 and 5 5, respective- 1y, Fig. 2.

In Fig. 1 typical parts of a conventional hot air heating plant are designated by numeral as follows: re box I0, heating dome II, cold air jacket I2, and burner I 3.

The invention comprises a plurality of relatively thick, horizontal, circular members formed 2 from re clay or similar refractory material and suspended within the nre box IIJ over the burner I3. The relatively thick fire clay members absorb heat from the burner I3 while the latter is ignited, and radiate heat to the walls of the fire box I0 while the burner is extinguished.

In the embodiment illustrated, there are two of the heat-radiatingmembers, the upper one being formed from four segment-shaped lire clay blocks I4 clamped together in a circular form by means of a metallic clamping band I5 and clamping bolts I6. The lower heat-radiating member also consists of four fire clay segment-shaped blocks I1 clamped together by means of a similar clamping band I8 and bolts I9.

The blocks I4 are provided with a plurality of uniformly spaced, inclined, triangular-shaped flame openings 20, and the lower blocks I1 are similarly provided with similar flame openings 2|. The flame openings 20 and 2| incline inwardly as they approach the top of the blocks. The bottoms of the blocks are also inclined inwardly and upwardly to form a hollow, conical concavity in the bottom of the assembled block.

The blocks are suspended from a suspension rod 22 which extends downwardly from a hanger bar 23, the rod being provided with a head 24 which supports it in the bar 23. The bar is threaded to receive two supporting nuts 25 and 26, respectively.

The upper supporting nut 25 supports a spider member 2l having four arms which support the blocks I4 along their adjacent edges. The lower nut 26 supports a rectangular plate 28, which in turn supports the lower blocks I'I. The spider 21 is provided with hooks 29 from which suspension wires 36 may be extended to eye members 3l embedded in the blocks I1.

The device is installed by passing the hanger bar 23 into the dome II and allowing it to rest across the top of the re box I0, as shown in Fig. 1. The nuts 25 and 26 are then adjusted to properly vertically position the blocks within the re box, so that the latter will be `uniformly spaced from the walls and at a height above the burner I3 to allow complete combustion below the lowermost set of blocks I1.`

The flames and the heated gases-pass freely y around the blocks and through the openings 20 and 2|. In doing so, the blocks absorb heat from the heated gases until they reach a temperature substantially equal to the temperature of the gases.

When the burner I3 is extinguished, this absorbed heat will be thrown off or radiated to the 3 walls of the re box, maintaining the latter warm for a considerable period to prevent sudden chilling of the heating plant.

While a specific form of the improvement has been described and illustrated herein, it is to be understood that the same may be varied, within the scope of the appended claim, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patentis:

In a furnace the combination of a re box, a heat retaining and radiating device comprising: a lower circular block of refractory material; an upper circular block of refractory material, :there being a hollow concavity in the bottom of each 15 block, and there being triangular ame passages through each block, said passages inclining axially inward as the tops of the blocks are approached, the upper block being smaller in 'diameter than the lower block; and means for suspending said blocks in vertically separated relation in said re box in spaced relation to the Walls of the latter.

ROBERT J. HINSLEY.'

REFERENCES CITED The following references are of record in the file of this ,patenti UNITED STATES PATENTS Number Name Date "760,262 Shoals May 17, 1904 1786,30@ Laberge Apr. 4, A1905 1,464,210 Marx Aug. '7, 1923 "13667,:133 Schrader Apr. 24, 1928 1,725,974 Brautigam Aug. 27, 1929 2,266,551 4Harvey Dec. 16, 1941 2,364,698 DaVn Dec. 12, 1944 

